04/os Flashcards
Angle of attack, mean camber line, camber
Angle between the chordline and the flow1
Aline equidistant between the upper and lower surfaces of the aeroteil.
Distance between the meancamberline and chord line
High speed aerosols will have a high or low T/c ratio
T/c is the ratio of max thickness to chord length
Ans: low
What is the area with free stream velocity and pressure
Free stream flow
Why dues the upper surface experience accelerated flow
The flow pattern causes a restriction ltrroat) in the stream tubes above the wing
Dynamic press increases and v2 increases too
This is so the mass flow is conserved
If there is a positive camber and angle of attack, where is the areas of high and low static pressure
Top - low
Below.- high
Total reaction
Sum of all unbalanced forces, e.g. Lift and drag
Point oforigin is the centre of pressure - vector
Factors affecting pressure around anaerofoil
Camber, angle of attack, speed of the airflow
Effect of alpha, speed, camber
Cambered - total reaction magnitude increases, cp mores forward
Symetrical-only total reaction increases
Greater speed treater pressure change
Increase in camber, increases the pressure differential
What is the coefficient
Force-producing potential of an aero foil section
